Australia has added left arm spinner Ashton Agar to their squad for next week's Test at the SCG.
The 24-year-old has been included at the expense of fellow left-armers Steve O'Keefe and Jon Holland.
Agar has only played one Sheffield Shield match this summer after he spent the first half of the season recovering from a broken finger, however, he did feature in Australia's last two Test matches in spinning conditions in Bangladesh.
Agar made his debut for Australia in the 2013 Ashes series in England.
Australia now lead The Ashes 3-0, having won the Gabba, Perth and WACA Test.
On the last two occasions Test cricket was played at the SCG, Lyon and O'Keefe both featured in the Australian playing XI as they drew a rain-hit game against Windies (January 2016) and beat Pakistan by 220 runs (January 2017).
Starc, who missed the ongoing Boxing Day Test due to a heel injury, and middle order batsman Peter Handscomb, who was dropped from the side after the second Adelaide Test, have been retained in the 14-man squad.
However, Agar's selection follows a clear pattern from Trevor Hohns' panel, who have identified the left-arm West Australian as a key man in their plans for the tour of India in 2021.
Australia squad: Steve Smith (captain), David Warner, Cameron Bancroft, Usman Khawaja, Shaun Marsh, Mitchell Marsh, Tim Paine, Pat Cummins, Josh Hazlewood, Nathan Lyon, Jackson Bird, Mitchell Starc, Ashton Agar, Peter Handscomb.